Sponge holder



FIG. 1 is a front elevation view of a sponge holder showing our new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevation view thereof, the right side elevation being the mirror image thereof;

FIG. 6 is bottom, front perspective view thereof; and,

FIG. 7 is a bottom, rear perspective view thereof. 

CLAIM The ornamental design for a sponge holder, as shown and described. 